Ring binder



Oct. 31, 1933.

H. T. ADAMS ET AL RING BINDER Filed May 27, 1932 Patented Oct. 31, 1933 PA'rrlvr OFFICE i RING BINDER Henry T. Adams and Normanv D. `llachtrieb,l

Chicago, Ill.; 'said Nachtrieb assignor to said Adams Application May 27, 1932. serial No. 613,943

1o claims. (ci. 1294-24) This invention relates to ring binders and more particularly to books.

An object of the invention is to provide aring 5- binder of improved Construction and operation in which three or morerings may be supported and simultaneously operated. Other objects and advantages will appear as the specication proceeds. l

The invention is illustrated, `in apreferred embodiment in the accompanying drawing which:

Figure 1 is a top. plan view of a binder embodying our invention; Fig. 2, a bottom plan view; Fig. 3,- an enlarged sectional view, the section being taken as' indicated at line 3 of Fig. 1; Fig.`4, an enlarged sectional view showing the half ring prongs in open position, the section being taken as indicated at line 4 of Fig. l.; Fig'. 5', a broken enlarged, sectional View, the section being taken as indicated at line 5V of Fig. 1; and 6, an enlarged sectional detail view, the section being taken as indicated at line 6 of Fig. 1.- i In the illustration given, 10 designates ametal back strip lor casing having inwardly turned edgesor sides 11 and 12. The casing is open ori its bottom side which normally faces the portion of the loose-leaf book to which it may be attached.' `Openings 13 are provided near the ends of the back strip through which rivets or other binders employed with loose-leaf fastening means may be passed. -In order to but-v tress theends of the metal back strip and to avoid raw edges of the metal, we preferably form the ends as illustrated in Figs. `l, 2 and 6. Each endis provided with a tapered or downwardly inclined concave Walll4 which terminatesl in a substantiallystraight edge 15. The edgeY 15 is aligned with the bottom of the sidewalls 1l and l2 and is adapted to rest evenly upon the looseleaf book. The corners of the side walls 1l and 12 are cut away at the'ends to provide rounded `or taperingends 16. f v

The top wall of the back strip loisprovided with a number of ring member openings 17 which permit the leaf-impaling rings to extend therethrough. In the illustration given, three sets of spaced openingsvare shown. The ring 'members are preferably `formed in duplicates. YIn the illustration given, the ring members designated by the numeral 18 are duplicates and the members 19are duplicates. of the members 18 is provided with a shank por- -tion 20, which engages one of the side walls of ,the back strip, and with inwardly turned terminal 55 'arches 21.` A half ring prong 22 is carried by EachV each of the arches and extends through an opening 17 in the backstrip.

Each of the ring members 19 is also provided with a central shank 23 and at its outer end with an inwardly turned arch 24. 'The arch carries a 00 'half ring prong 25 which extends through one of the openings 17.

At its inner end, however, the member 19 is provided with an inwardly turned portion 26 equipped with an upwardly curved and tapered extension 27.

The ring members are preferably assembled as shown in Figs. 2 and 5. The arches 24 and inwardly turned portions 26'of the ring members 19`are provided with tongues or swaged extensions 28 which engage grooves 29, with 4which the arches 70 of members 18 are provided, to form toggle joints. As is shown clearly in Figs, 2 and 5, the inner ends 27 of members 19 are Yturned upwardly so as to `rest upon the inner arches 21 of members 18. In

order to provide room for the play ofv the interlocking members,;we stamp the top wall of the back, strip outwardly to. form a crown or recess 30. The crown 3,0v not-only serves to house the interlocked ends of the ring members but also braces and strengthens the'central portion of the 30 back strip and contines the in terlocked members in operative relation.

bers have an interlockingengagement at their inner ends. Each pair has onemember, the archr 21, extending under a member, extension 27, of the other'pair; also, each pair has a member, 95 extension 27, extending over a member, arch 21, ofthe other pair. In other words, each of the 'pivotally connected pairs has a part extending over'and a part extending under the members of the otherl pair. With this arrangement, when one of the ring membersis swung to one position, it causes a corresponding movement of its lcompanion member and of the vother pair of members.v vFor example, if one of the rings is moved from closed position, as shown in Fig.v 3, to the open position shown in Fig. 4, the arch 21 of member 18 directly actuated will 'raise the extension 27 of the longitudinally adjacent member 19 and the member 19 will in turn actuate member 18. Likewise, in closing one of the rings, the -f extension 27 of the member 19 which is directly' actuated will depress the contacting arch 21 of the member 18 of the other pair while, at the Sametime, the companion ringmembers ineach pair are actua'ted byfreasonoffthe pivotal` connections. AIn swinging the rings to open position,

6. In a ring binder, a back strip provided with inturned edges and with ring openings through said back strip, a pair of diagonally opposed ring :members each of whicl'ijs equippedat its ends T with inwardly turned arches and withv half rings room is provided for the superposed or inter-" locked ring member connections by the recess orA crown 30 in casing 10.

The use of duplicates greatly reduces the num'- ber of manufacturing operations and the number.,

of dies required. The ,parts `employed permit ready and inexpensive assembly and, in their 1. I na. device of the, character-j set forth, a

v back s trip` equipped with inturned edges, a-plu-f.

rality. of longitudinally aligned 4ring members engaging Said edges, interlocking connections vformedby the endsgof at least two 'of said longitudinally aligned members, and transverse 'said back strip extending through said ring openings, a second pair of diagonally opposed ring members each having at one end an inwardly turned arch pivotally connected to the respective outer arch of said-rst-mentioned ring members and having at itsY other end an inwardly turned portion piv- "otally connected to an arch of said first-mentioned'ring mem-bers, each of said second-mentioned ring members having also an extension passing ove'- the-inner arch of the ring memberlongitudinally aligned therewith, and a recess in housing said ring member exten- Sions-V ,Lvf A '1. In afring binder,- a backistrip casing having inwardly turned side walls and having ringbpenings therein, two pairs of .oppositely disposed and Aph/ otally connectedr ringmembers .engaging th Aside walls of saidback strip-:easing,zeach' of said pairs being equippedwith half rings extending v through saidring openingsI and being :longitudipivotal connectionsbetween ring members disposed ,on opposite sides of said backstript 2, In. a `.device of the character. s eturforth, ay bachstrip equippedwith'inturned edges, mating `p irs of oppositelydisposedring members engag-' ing said edges, said mating pairs being vin longi-` tudiral alignmentY and. each havingY inwardly.:

turned portionsprovided with hinged connec-` tions, `half rings carried *by said -ringv members and extending through said back strip, and in- Astrip casing.

'terlockng Aconnections formed bythe endsl of at least two of said longitudinally aligned members.

nally aligned within said casing with respect to eac h otherJ pivotal'fconnections between the: .oppositelyl disposed fmembersof: each; pair', and yend portions o f saidlongitudinallyfalignedfimem bers forming interlocking connections'iso that -movement vof one-ring produces a;.corresponding Imovement of the otherringsfm' j il:

8. yIn a three-ring binder, =a fback' f strip equipped with inwardly turned.: sided-walls, two

- pairs of ring members engaging the,.side' walls sitelyv disposed and pivotally connected-ring mem'l. bers and being longitudinally; alignedvwith Y the 3. In a device ofthe v.character setgIOrth, a. backs'trip .provided with inturnediedges, longi- `tudinally aligned-ring members engaging-said. edges, vinterlocking connections formed -by the.v

` ends lof at least two of said longitudinally aligned l members, said back strip being provided on its closed side with a recess .extendingover said upon opposite sides offthe back strip.

interlocking connections, and transverse pivotal v.

4. In a devicexof the character set forth, al'r back strip casing provided with inturnededges, duplicate ring members diagonally disposed with respect tor each other within said casing, interlocking connections `formed -by the ends of at of said back strip, each `Ypair y...comprisingloppopair of yring. members 'at their inner extremities,

interlockingv connections .towedby the' ends? of at ,least, two of the longitudinal-ly aligned' 4mem- Vbeis and a recess afforded by said backv strlp'adjacent said interlocking connections.. f

9. Inra device ofthe character-setforthaback' st rlp casing closed ion one side and having invturnedside walls; ring lmembersengaging Vsaid side walls, said casing hav-ing at.each end a "downwardly inclined l and concave-wall terminatmembers disposed on opposite sides of the back' 5. In a ring binder, aback strip provided on its closed side with a recess,sai`d y back strip betwo pairsof oppositelywdisposed ringmembers engaging said inturnedkside walls, each'pairgbe# ing longitudinally alignedwith the other-pair cavewall terminatingin aisubstantially flat and.

and the diagonally Vdisposedfring members'being'- strip, andl'the` A each pair being pivotally connected.

ingin a substantially straight and atedge, said? side walls extending at their, ends to. a point adv`jacent said straight edge and forming with said least ,two of thelongitudinally alignedvmembers2 inclined Wall an integraybend..

, and transverse p ivotalL connections between ring 10, In la deviceof the .character setforth, a

back str ipncas'ing kclosed onone side and havingV inturned side walls; said side walls terminating short of vthe end ofthe backstrip casing, ring 'members Yengaging lthe side :walls Asaid .casing "ing alsoprovided with inturned side' walls, and

having at each en'd a1 downwardly .turned "contransversely curvedangefthe said downwardly inclined wall and'langeubeing exterior to and shielding'the ends'oi said side walls.

NoRMAN-'-rn 'NAcH'raiaBf Y 

